FujiFilm SonoSite Edge II User Manual page 117

Table 5-4: OB calculations for system-defined measurements
Calculation Result
Growth Analysis
d
Tables
a
The Gestational Age is automatically calculated and displayed next to the OB measurement you selected. The
average of the results is the AUA.
b
For Tokyo U., APTD and TTD are used only to calculate EFW. No age or growth tables are associated with these
measurements.
c
The Estimated Fetal Weight calculation uses an equation that consists of one or more fetal biometry
measurements. The author for the OB tables, which you choose on a system setup page, determines the
measurements you must perform to obtain an EFW calculation. Refer to
Individual selections for Hadlock's EFW equations 1, 2, and 3 are not determined by the user. The selected
equation is determined by the measurements that have been saved to the report with priority given to the order
listed above.
c
The Growth Analysis tables are used by the Report Graphs feature. Three growth curves are drawn using the table
data for the selected growth parameter and published author. Growth tables are only available with a
user-entered LMP or Estab. DD.
To measure gestational growth (2D)
For each 2D OB measurement (except AFI), the system saves up to three individual measurements and their
average. If you take more than three measurements, the earliest measurement is deleted.
For each 2D OB measurement (except AFI), the system saves up to three individual measurements and their
average. If you take more than three measurements, the earliest measurement is deleted.
1 In the patient information form, select OB exam type, and select LMP or Estab.DD. Select Twins if
appropriate.
2 On a frozen 2D image, press the CALCS key.
3 Do the following for each measurement you want to take:
a From the calculations menu, select the measurement name.
Measurements and Calculations
Gestational OB
Table Authors
Measurements
BPD Chitty, Hadlock, Jeanty
HC Chitty, Hadlock, Jeanty
AC Chitty, Hadlock, Jeanty
FL Chitty, Hadlock, Jeanty
EFW Brenner,
Hadlock, Jeanty
HC/AC Campbell
"OB Calculations setup" on page 3-11.
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